LT1007CH Equivalent & Substitute Parts

Part Overview

The LT1007CH is a general-purpose operational amplifier manufactured by Analog Devices Inc., housed in a TO-5 metal can package with through-hole mounting. This device is classified as obsolete, indicating discontinued production and limited availability for new designs. The LT1007CH features a single amplifier circuit with specifications suitable for general-purpose signal conditioning and amplification applications across industrial and commercial temperature ranges (0°C to 70°C).

Due to its obsolete status, identifying functionally equivalent substitute parts is necessary for design continuity, system maintenance, and component procurement. Substitute parts must maintain electrical compatibility across critical parameters including gain-bandwidth product, slew rate, input offset voltage, input bias current, and supply voltage specifications.

Substiute Parts

LT1007CH

Analog Devices Inc.In Stock: 2541LT1007CH Datasheet

Current PartRFQ

OP27AJ/883C

Analog Devices Inc.In Stock: 1743OP27AJ/883C Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LT1007CH are identified based on strict electrical and mechanical compatibility criteria. The following parameters establish the substitution basis:

Critical Matching Parameters:

• Amplifier Type: General Purpose (single circuit configuration)
• Gain Bandwidth Product: 8 MHz (defines frequency response characteristics)
• Supply Voltage Range: 8 V to 36 V (ensures power supply compatibility)
• Mounting Type: Through Hole (maintains PCB integration compatibility)
• Input Bias Current and Input Offset Voltage: Must remain within acceptable operational tolerances

Acceptable Variation Parameters:

• Slew Rate: Substitute may exceed the original specification (2.5 V/µs minimum)
• Operating Temperature: Substitute may provide extended range beyond the original 0°C to 70°C
• Package Type: Substitute may use alternative through-hole metal can packages (TO-99-8 acceptable as functional equivalent)

The OP27AJ/883C meets all critical matching parameters while providing enhanced performance characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

OP27AJ/883C as Primary Substitute:

The OP27AJ/883C is the qualified substitute for the obsolete LT1007CH. This substitution is based on the following engineering factors:

Electrical Compatibility: The OP27AJ/883C maintains identical gain-bandwidth product (8 MHz) and supply voltage range (8 V to 36 V), ensuring direct functional equivalence in signal conditioning circuits. The substitute demonstrates improved input characteristics with lower input bias current (10 nA versus 15 nA) and reduced input offset voltage (10 µV versus 20 µV), providing enhanced precision in applications requiring low-noise amplification.

Product Status and Availability: The OP27AJ/883C holds active product status with current manufacturing and distribution, eliminating supply chain risk associated with the obsolete LT1007CH. This transition ensures long-term component availability for production and field maintenance applications.

Compliance and Qualification: The OP27AJ/883C carries MIL-STD-883 military qualification and ROHS3 compliance certification, meeting stringent reliability and environmental standards. Both devices share identical moisture sensitivity level (MSL 1) and export classification (EAR99), maintaining regulatory consistency.

Package Consideration: The OP27AJ/883C uses TO-99-8 metal can packaging versus the LT1007CH TO-5-8 package. Both are through-hole mounted metal can configurations with identical pin counts and compatible footprint spacing for standard PCB layouts. Physical package dimensions differ slightly; verification of PCB layout accommodation is required during design transition.

Temperature Range Extension: The OP27AJ/883C operating temperature range (-55°C to 125°C) exceeds the LT1007CH specification (0°C to 70°C), providing enhanced performance margin for applications in extended environmental conditions.

Frequently Asked Questions (FAQ)

Q: Can the OP27AJ/883C directly replace the LT1007CH without circuit modifications?

A: The OP27AJ/883C provides electrical equivalence across all critical operational parameters. The primary consideration is physical package compatibility. The TO-99-8 package footprint differs from TO-5-8; PCB layout verification is required to confirm pin spacing and mounting hole alignment with existing through-hole patterns. No circuit modifications are necessary if package dimensions accommodate the substitute.

Q: What are the key electrical differences between these devices?

A: Both devices share identical gain-bandwidth product (8 MHz) and supply voltage specifications (8 V to 36 V). The OP27AJ/883C provides superior input characteristics with 33% lower input bias current and 50% lower input offset voltage. Slew rate is marginally higher (2.8 V/µs versus 2.5 V/µs). These differences represent performance improvements suitable for precision amplification applications.

Q: Why is the LT1007CH classified as obsolete?

A: Obsolete status indicates discontinued manufacturing by Analog Devices Inc. The LT1007CH remains available through existing inventory channels but lacks long-term supply assurance. The OP27AJ/883C represents the active product line continuation with equivalent functionality and enhanced specifications.

Q: Are there compliance or certification differences between these parts?

A: The OP27AJ/883C carries MIL-STD-883 military qualification, providing enhanced reliability documentation. Both devices maintain identical moisture sensitivity level (MSL 1), export classification (EAR99), and tariff codes (HTSUS 8542.33.0001). The substitute meets ROHS3 environmental compliance requirements.

Q: What is the operating temperature impact of substitution?

A: The OP27AJ/883C extends operating temperature range to -55°C to 125°C compared to the LT1007CH range of 0°C to 70°C. This provides additional performance margin for applications in extreme thermal environments. Existing designs operating within 0°C to 70°C experience no thermal performance degradation.

Q: How do input bias current and offset voltage differences affect circuit performance?

A: Lower input bias current (10 nA versus 15 nA) reduces loading effects on high-impedance signal sources, improving signal fidelity in precision measurement circuits. Reduced input offset voltage (10 µV versus 20 µV) decreases DC error accumulation in integrator and summing amplifier configurations. These improvements enhance overall circuit accuracy without requiring design modifications.

Q: Is package pin compatibility verified between TO-5-8 and TO-99-8 configurations?

A: Both packages use 8-pin through-hole metal can configurations with identical pin counts and standard spacing. Pin assignments follow industry conventions for single-amplifier devices. Physical package dimensions differ; PCB layout verification is required to confirm mounting hole alignment and clearance with adjacent components before implementation.